Hi Dr Minakshi,
Thank you for the query.
For a CKD patient with such a low eGFR Galvus is not recommended. The tablet is new in the market since less than 10 years and the renal safety data is not much when the eGFR is so so less. For him best medication is insulin
. And for a CKD patient, very small doses of short acting analogue insulins like Humalog
given before each meal is better than a pre-mixed insulin. You please see a very good Endocrinologist
and he/she will guide you further. But stopping the Tablet Galvus and switching to Fast acting anlogue insulins is very safe for controlling sugars and at the same time to avoid hypoglycemia
Please do not be behind 'stopping insulin' as for your father this is THE BEST treatment at this stage.
I hope you understand. Take care.